<pre class="card card-block card-header">{{uncheckableRadioModel || 'null'}}</pre>
<div class="btn-group" btnRadioGroup [(ngModel)]="uncheckableRadioModel">
  <label class="btn btn-info" btnRadio="Left"
         uncheckable tabindex="0" role="button">Left</label>
  <label class="btn btn-info" btnRadio="Middle"
         uncheckable tabindex="0" role="button">Middle</label>
  <label class="btn btn-info" btnRadio="Right"
         uncheckable tabindex="0" role="button">Right</label>
</div>
